Use of uninitialized resource in Google Chrome - CVE-2021-21218

Vulnerability identifier: #VU52248

CSH Severity: Low

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-21218

CWE-ID: CWE-908

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to usage of uninitialized resources in PDFium in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and crash the browser.

Google Chrome
Microsoft Edge
Arch Linux
Gentoo Linux
Fedora
chromium (Debian package)
chromium

Update to version 90.0.4430.72.

Google Chrome - update to 90.0.4430.72
chromium (Debian package) - update to 90.0.4430.85-1~deb10u1
Microsoft Edge - update to 90.0.818.39
chromium - addressed in versions 90.0.4430.93-1.el7, 90.0.4430.93-1.el8, 90.0.4430.93-1.fc32, 90.0.4430.93-1.fc33, 90.0.4430.93-1.fc34

• https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_14.html
• https://crbug.com/1166478

• Multiple vulnerabilities in Google Chrome
• Multiple vulnerabilities in Microsoft Edge (Chromium-based)
• Debian update for chromium
• Arch Linux update for opera
• Arch Linux update for vivaldi
• Gentoo update for Chromium, Google Chrome
• Fedora 34 update for chromium
• Fedora 32 update for chromium
• Fedora 33 update for chromium
• Fedora EPEL 8 update for chromium
• Fedora EPEL 7 update for chromium